#
#unix command
#
#mkdir abc
#cd abc
#

# two ways: vi or 
#!/usr/local/bin/python
#p23.py

first= 'john'
last= 'chen'

print(first, last)
print(f"{first}{last}")

#!/usr/local/bin/python
#p38.py bikes-list.py

bikes = ['giant', 'merida', 'joker']
print (bikes)

print (bikes[0])
print (bikes[-1]) #last one

# list methods: insert, append, del, pop, push
bikes.append('trek')
bikes.insert(0, 'colnago')